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[Differentiation of staphylococci from sheep and goat milk samples]

M Deinhofer1, A Pernthaner

  • 1II. Medizinischen Universitätsklinik für Klauentiere der Veterinärmedizinischen Universität Wien.

DTW. Deutsche Tierarztliche Wochenschrift
|June 1, 1993
PubMed

Insights

Staphylococcus aureus and coagulase-negative staphylococci, particularly S. epidermidis, are key causes of chronic mastitis in ewes and goats. These bacteria significantly increase milk somatic cell counts and lead to pathological udder changes.

Area of Science:

  • Veterinary Microbiology
  • Dairy Science
  • Bacterial Pathogenesis

Context:

  • Chronic mastitis is a significant concern in small ruminant dairy production, impacting both ewe and goat health and milk quality.
  • Micrococcaceae, particularly Staphylococcus species, are frequently implicated as causative agents of mastitis in dairy animals.

Purpose:

  • To identify and differentiate Micrococcaceae strains, focusing on Staphylococcus species, isolated from chronic mastitis cases in ewe and goat milk.
  • To correlate specific Staphylococcus species with the severity of mastitis, including milk somatic cell counts and clinical udder alterations.

Summary:

  • A total of 447 Micrococcaceae strains were isolated from 447 ewe and goat milk samples. Of these, 389 (87%) were identified using the ATB 32 STAPH-test.
  • Staphylococcus aureus was identified as the primary cause of highest milk cell counts and clinical udder alterations in both species.
  • Coagulase-negative staphylococci, including S. epidermidis, S. warneri, S. simulans, S. lugdunensis, and S. chromogenes, were associated with increased milk cell counts and pathological findings.

Impact:

  • This study provides crucial insights into the specific Staphylococcus species involved in chronic mastitis in small ruminants.
  • Understanding the pathogenic potential of different staphylococci can inform targeted prevention and treatment strategies for mastitis in sheep and goats.
  • The findings contribute to improving dairy animal health management and milk production efficiency by highlighting key bacterial culprits and their effects.

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